[Amps] figuring tube output impedance

[peter.voelpel]

The output impedance will be around 1100 ohms in class AB1.
I considered a DC anode voltage swing of 3,5KV and conduction angle of 180°

73
Peter

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Partain, Chuck
Sent: Montag, 27. Februar 2006 19:36
To: amps at contesting.com
Subject: [Amps] figuring tube output impedance


I see a lot of  formulae(is that plural???) on determining the output
impedance of a tube.
some say just plain plate volts divided by plate current, some have a 1.8 x
formula  and so on. I Want to determine
this gu-84b impedance so I can start work on the tank setup. I run 3.9kv and
I'm GUESSING 2 amp.
 I stuck a 2k in there and played some with the values so far and things
look ok, no suprises. this is
 my motive for the question. lets hear some opinions! thanks as always.





Chuck Partain
http://home.comcast.net/~KA1MWP


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